Bicycle frame



FIG. 1 is a perspective view of a bicycle frame embodying the present invention.

FIG. 2 is a right side view of the bicycle frame of FIG. 1.

FIG. 3 is a left side view of the bicycle frame of FIG. 1.

FIG. 4 is a front view of the bicycle frame of FIG. 1.

FIG. 5 is a rear view of the bicycle frame of FIG. 1.

FIG. 6 is a top view of the bicycle frame of FIG. 1; and,

FIG. 7 is a bottom view of the bicycle frame of FIG. 1.

The broken lines in the drawings illustrate portions of the bicycle frame that forms no part of the claimed design. 

CLAIM The ornamental design for a bicycle frame, as shown and described. 